An apparatus may include a mud pot and a reflectometer to monitor a level of an interface between liquid diluent and catalyst slurry in the mud pot using reflectometry. The apparatus may include a mixing tank and a conduit to transfer catalyst slurry from the mud pot to the mixing tank. The apparatus may include a polymerization reactor and a conduit to provide catalyst slurry from the mixing tank to the polymerization reactor.
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1. An apparatus comprising: a mud pot comprising a frustoconical bottom portion and a catalyst inlet which is concentric with the central longitudinal axis of the mud pot, wherein the mud pot contains at least a catalyst slurry and a liquid diluent; and a reflectometer disposed adjacent to the catalyst inlet, the reflectometer adapted to monitor a level of an interface between the liquid diluent and the catalyst slurry in the mud pot using reflectometry.
An apparatus for monitoring catalyst slurry levels comprises a "mud pot" which is a container with a cone-shaped bottom and an inlet for the catalyst located in the center. The mud pot contains a mixture of catalyst slurry and a liquid solvent. A reflectometer, a device using reflected signals, is positioned near the catalyst inlet to measure the boundary line between the liquid solvent and the catalyst slurry. This measurement is achieved through reflectometry, which analyzes reflected electromagnetic signals.
2. The apparatus of claim 1 , wherein the reflectometer is adapted to monitor the level of the interface between liquid diluent and catalyst slurry in the mud pot using Time Domain reflectometry.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. This reflectometer uses Time Domain Reflectometry (TDR), a method that sends a signal and measures the time it takes to return, to determine the level.
3. The apparatus of claim 2 , wherein the reflectometer is adapted to monitor the level of the interface using radar based Time Domain reflectometry.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry using Time Domain Reflectometry (TDR). Specifically, this reflectometer uses radar-based TDR, employing radar pulses to measure the reflected signals.
4. The apparatus of claim 1 , wherein the reflectometer is adapted to monitor the level of the interface using Frequency Domain reflectometry.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. This reflectometer uses Frequency Domain Reflectometry (FDR), which analyzes the changes in reflected signals across a range of frequencies to determine the level.
5. The apparatus of claim 1 , wherein the reflectometer is a reflex radar level gauge adapted to use Time Domain reflectometry.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The reflectometer is a reflex radar level gauge that relies on Time Domain Reflectometry (TDR) to make its measurements.
6. The apparatus of claim 1 , wherein the reflectometer is adapted to measure electromagnetic energy having a power of at most 2 Watt reflected from the interface.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. This reflectometer measures reflected electromagnetic energy with a power of 2 Watts or less.
7. The apparatus of claim 1 , wherein the reflectometer is adapted to provide electromagnetic pulses of two nanoseconds.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The reflectometer emits electromagnetic pulses lasting only two nanoseconds.
8. The apparatus of claim 1 , wherein the reflectometer comprises a transmitter adapted to transmit a short rise time pulse of electromagnetic energy into the mud pot; a receiver adapted to receive a signal of reflected electromagnetic energy from solid catalyst particles in the mud pot; and a processing unit, wherein the receiver is adapted to send the signal to the processing unit, and wherein the processing unit is adapted to compute a distance to the solid catalyst particles.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The reflectometer comprises a transmitter that sends short, fast electromagnetic pulses into the mud pot; a receiver that captures the reflected signals from solid catalyst particles; and a processor. The receiver sends the reflected signal data to the processor, which then calculates the distance to the solid catalyst particles.
9. The apparatus of claim 1 , further comprising a propagation device adapted to guide electromagnetic energy from the reflectometer into the mud pot and to guide reflected electromagnetic energy from the mud pot to the reflectometer.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. It also includes a propagation device or waveguide. This device directs the electromagnetic energy from the reflectometer into the mud pot and guides the reflected signals back to the reflectometer.
10. The apparatus of claim 1 , further comprising a flange connecting the reflectometer to the mud pot, wherein the flange is positioned between a sensor of the reflectometer and a propagation device of the reflectometer, and wherein the propagation device is adapted to guide electromagnetic energy from the reflectometer into the mud pot.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. A flange connects the reflectometer to the mud pot. This flange is positioned between the reflectometer's sensor and a propagation device (waveguide), which guides the electromagnetic energy from the reflectometer into the mud pot.
11. The apparatus of claim 1 , wherein the mud pot has a cylindrical body with a frustoconical bottom portion.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The mud pot has a cylindrical body with a cone-shaped (frustoconical) bottom.
12. The apparatus of claim 11 , wherein the frustoconical bottom portion has an opening angel α of at most 65°.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. The mud pot, as before, has a cylindrical body and a cone-shaped bottom. The angle of the cone-shaped bottom (opening angle α) is 65 degrees or less.
13. The apparatus of claim 1 , wherein the mud pot has a length to width ratio of at least 3.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The mud pot has a length-to-width ratio of at least 3.
14. The apparatus of claim 1 , wherein the mud pot comprises a solid catalyst inlet that is concentric with a central longitudinal axis of the mud pot.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The mud pot includes a catalyst inlet that's centered (concentric) along the mud pot's main axis.
15. The apparatus of claim 1 , further comprising a catalyst supply vessel adapted to transfer catalyst to the mud pot through a solid catalyst inlet of the mud pot.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. It also contains a catalyst supply vessel, which feeds catalyst into the mud pot through its solid catalyst inlet.
16. The apparatus of claim 1 , wherein the mud pot comprises a liquid diluent inlet vertically extending from a top of the mud pot into the catalyst slurry.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. The mud pot also has a liquid solvent inlet that extends vertically from the top of the mud pot and dips into the catalyst slurry itself.
17. The apparatus of claim 1 , further comprising: a mixing tank; and a conduit adapted to transfer catalyst slurry from the mud pot to the mixing tank.
The apparatus for monitoring catalyst slurry levels includes a mud pot containing catalyst slurry and liquid solvent, and a reflectometer. As described previously, the reflectometer measures the interface between the liquid and slurry. It includes a mixing tank, along with a conduit (pipe or channel) that transfers the catalyst slurry from the mud pot into the mixing tank.
18. The apparatus of claim 17 , further comprising: a polymerization reactor; and one or more conduits adapted to provide catalyst slurry from the mixing tank to the polymerization reactor.
The apparatus includes a mud pot, reflectometer, mixing tank and transfer conduit as described above. It further includes a polymerization reactor and one or more conduits that transfer catalyst slurry from the mixing tank to the polymerization reactor. This is the final stage where the catalyst is used to trigger a polymerization reaction.
19. An apparatus comprising: a mud pot comprising a frustoconical bottom portion and a catalyst inlet which is concentric with the central longitudinal axis of the mud pot, wherein the mud pot contains at least a catalyst slurry and a liquid diluent, wherein the catalyst slurry comprises a metallocene catalyst or a chromium catalyst; and a reflectometer disposed adjacent to the catalyst inlet and which is adapted to monitor a level of an interface between the liquid diluent and the catalyst slurry in the mud pot using reflectometry.
An apparatus for monitoring catalyst slurry levels comprises a "mud pot" which is a container with a cone-shaped bottom and an inlet for the catalyst located in the center. The mud pot contains a mixture of liquid solvent and a catalyst slurry made from metallocene catalyst or chromium catalyst. A reflectometer is positioned near the catalyst inlet to measure the boundary line between the liquid solvent and the catalyst slurry using reflectometry.
20. An apparatus comprising: a mud pot comprising a frustoconical bottom portion and a catalyst inlet which is concentric with the central longitudinal axis of the mud pot, where the mud pot contains at least a catalyst slurry and a liquid diluent, wherein the catalyst slurry comprises a metallocene catalyst or a chromium catalyst; a reflectometer disposed adjacent to the catalyst inlet and which is adapted to monitor a level of an interface between the liquid diluent and the catalyst slurry in the mud pot using reflectometry; a mixing tank and a conduit adapted to transfer catalyst slurry from the mud pot to the mixing tank; and a polymerization reactor and one or more conduits adapted to provide catalyst slurry from the mixing tank to the polymerization reactor.
An apparatus for ethylene polymerization comprises a mud pot containing liquid solvent and a catalyst slurry (metallocene or chromium), a reflectometer to measure the liquid/slurry interface, a mixing tank, a conduit to transfer slurry from the mud pot to the mixing tank, a polymerization reactor, and one or more conduits to supply catalyst slurry from the mixing tank to the polymerization reactor. The mud pot has a cone-shaped bottom, and the catalyst inlet is centered. The reflectometer is positioned near the catalyst inlet and uses reflectometry to determine the interface level.
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April 2, 2015
December 12, 2017
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